Donation receipts are important! Here's how to create donation receipts your donors (and the IRS) will love.We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes. Bystep guide on how to fill out a Goodwill tax donation receipt. This form is available at our stores in Maine, New Hampshire and Vermont. A donation receipt documents the details of a cash or property donation that's gifted to an individual cause or organization. What do you need to include in your donation acknowledgment letter? "Thank you for your contribution of (insert amount of cash donation) on Date. No goods or services were provided in exchange for this contribution. You will need to enter the donation receipt ID Number listed above.